Using the $4$ weeks of data below, forecast sales for the fifth week using a $3-$week weighted moving average. The most current weight is $0\mathrm{.}5,$ and the oldest weight is $0\mathrm{.}2.($round to nearest whole number$)$Using the $4$ weeks of data below, forecast sales for the fifth week using a $3-$week weighted

moving average. The most current weight is $0\mathrm{.}5,$ and the oldest weight is $0\mathrm{.}2.($round to

nearest whole number$)$

$860$

$832$

$841$

$847$

$836$